Answer this question truthfully
### Question: What causes Acute upper airway obstruction?
### Response: Causes of acute upper airway obstruction include:
Allergic reactions in which the trachea or throat swell closed, including allergic reactions to a bee sting, peanuts, antibiotics (penicillin), and blood pressure medications (ACE inhibitors) Chemical burns and reactions Croup Epiglottitis (infection of the structure separating the trachea from the esophagus) Fire or burns from breathing in smoke Foreign bodies -- such as peanuts and other breathed-in foods, pieces of a balloon, buttons, coins, and small toys Viral or bacteria infections Peritonsillar abscess Retropharyngeal abscess Throat cancer Tracheomalacia Trauma Vocal cord problems